Module: FileSize

Included in:
PhoenixPassword
Defined in:
lib/file_size.rb

Instance Method Summary collapse

Instance Method Details

#cap_limit_combs(data, x = 0) ⇒ Object 



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# File 'lib/file_size.rb', line 217

def cap_limit_combs(data,x=0)
  if data[:type] == "matching"
    if !data[:match_limit].nil?
       puts "Combinations and file size may vary when using match_limit" if x == 0
       cap_limit_matching_l(data)
    else
       cap_limit_matching(data)     
    end
  else
    unique_cap_limit(data)      
  end
end

#cap_limit_matching(data) ⇒ Object 



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# File 'lib/file_size.rb', line 23

def cap_limit_matching(data)
  cap_data={}
    total_chars=data[:characters].join()
    caps_matched= total_chars.scan(/[A-Z]/)
    cap_data[:characters]=[]
    data[:characters].each do |char|
      next if caps_matched.include?(char)
      cap_data[:characters].push(char)
    end
    base=cap_data[:characters].length
    cap_matches=0
    case data[:cmb_length]
      when 3
      cap_matches += base*2
      when 4
         cap_matches+=get_combinations({:characters=>cap_data[:characters],:cmb_length=>data[:cmb_length]-1})*2
         cap_matches+=(base**2)*2
      else
        cap_matches+=get_combinations({:characters=>cap_data[:characters],:cmb_length=>data[:cmb_length]-1})*2         
        cap_matches+=(get_combinations({:characters=>cap_data[:characters],:cmb_length=>data[:cmb_length]-2})*base)*(data[:cmb_length]-2)
    end

  if !data[:extra_chars].nil?
    all_chars=data[:characters]+data[:extra_chars]
    new_cap_matches=cap_limit_matching({:cmb_length=>data[:cmb_length],:characters=>all_chars})
    return  new_cap_matches-(cap_matches*caps_matched.length)
  else
      return cap_matches*caps_matched.length   
  end

end

#cap_limit_matching_l(data) ⇒ Object 



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# File 'lib/file_size.rb', line 55

def cap_limit_matching_l(data)
  cap_data={}    
  total_chars=data[:characters].join()
  caps_matched= total_chars.scan(/[A-Z]/)
  cap_data[:characters]=[]
  data[:characters].each do |char|
    next if caps_matched.include?(char)
    cap_data[:characters].push(char)
  end
  base=cap_data[:characters].length
  cap_matches=0
  no_limit_matches=get_combinations({:characters=>cap_data[:characters],:cmb_length=>data[:cmb_length]-1})
  case data[:cmb_length]
    when 3
    cap_matches += base*2
    when 4
     cap_matches+=(no_limit_matches-get_above_limit({:characters=>cap_data[:characters],:cmb_length=>data[:cmb_length]-1,:match_limit=>data[:match_limit]}))*2
     cap_matches+=(base**2)*2
    else

     #XXA
     cap_matches+=(no_limit_matches-get_above_limit({:characters=>cap_data[:characters],:cmb_length=>data[:cmb_length]-1,:match_limit=>data[:match_limit]}))*2
     no_limit_matches=get_combinations({:characters=>cap_data[:characters],:cmb_length=>data[:cmb_length]-2})
     #XAX
     cap_matches+=((no_limit_matches-get_above_limit({:characters=>cap_data[:characters],:cmb_length=>data[:cmb_length]-2,:match_limit=>data[:match_limit]}))*base)*2
     x=data[:cmb_length]-4
     if x == 1
      cap_matches +=get_combinations({:characters=>cap_data[:characters],:cmb_length=>data[:cmb_length]-2})*base
     elsif x == 2
      grt_half_no_limit=get_combinations({:characters=>cap_data[:characters],:cmb_length=>data[:cmb_length]-3})
      grt_half_limit =grt_half_no_limit-get_above_limit({:characters=>cap_data[:characters],:match_limit=>data[:match_limit],:cmb_length=>data[:cmb_length]-3})
      cap_matches +=(((grt_half_limit*base**2)+(base*base**3))-(grt_half_no_limit*base))*2
     else
       #AXX
      i=3
      p=0
      l=0
      begin
        grt_half=get_combinations({:characters=>cap_data[:characters],:cmb_length=>data[:cmb_length]-(3+l)})
        grt_half_limit =grt_half-get_above_limit({:characters=>cap_data[:characters],:match_limit=>data[:match_limit],:cmb_length=>data[:cmb_length]-(3+l)})
        if i == 3
          if data[:cmb_length] <=8             
              cap_matches +=(((grt_half_limit*base**2)+(base*base**(x+1)))-(grt_half*base))*2
            else
            cap_matches +=((grt_half_limit*((base**2)-base))+(base*base**(x+1)))*2

          end 
        else
          lsr_half=get_combinations({:characters=>cap_data[:characters],:cmb_length=>i-1})
          lsr_half_limit=lsr_half-get_above_limit(:characters=>cap_data[:characters],:match_limit=>data[:match_limit],:cmb_length=>i-1)
          cap_matches +=(((grt_half_limit*(base**(2+p)))+(lsr_half_limit*base**(x+1-p)))-(grt_half*lsr_half))*2
             
        end
        p+=1
        l+=1
        i+=1
      end while i < (data[:cmb_length]/2.0).ceil



      if x%2 == 1
        no_limit_matches=get_combinations({:characters=>cap_data[:characters],:cmb_length=>x-(p-1)})
        half_point=(((no_limit_matches-get_above_limit({:characters=>cap_data[:characters],:cmb_length=>x-(p-1),:match_limit=>data[:match_limit]})))*base**(x-(p-1)))*2
        if data[:cmb_length] == 7
              cap_matches+=half_point-((half_point/base))
        else
          half_no_limit=get_combinations(:characters=>cap_data[:characters],:cmb_length=>x-1)              
          half_no_limit_b=get_combinations(:characters=>cap_data[:characters],:cmb_length=>x-2)

          if data[:cmb_length] >= 9 && data[:extra_chars].nil?
            puts "!------Approximately less  than------!"
          end
          cap_matches+=half_point-((half_point/base))
          
        end

      else
        no_limit_matches_a=get_combinations({:characters=>cap_data[:characters],:cmb_length=>(x-l)+1})
        greater_half=(((no_limit_matches_a-get_above_limit({:characters=>cap_data[:characters],:cmb_length=>(x-l)+1,:match_limit=>data[:match_limit]})))*base**(x-l))
        no_limit_matches_b=get_combinations({:characters=>cap_data[:characters],:cmb_length=>(x-l)})
        lesser_half=(((no_limit_matches_b-get_above_limit({:characters=>cap_data[:characters],:cmb_length=>(x-l),:match_limit=>data[:match_limit]})))*base**(x-l+1))
        
        if data[:cmb_length] == 10 && data[:extra_chars].nil?
          puts "!------Approximately less  than------!"
        elsif data[:cmb_length] == 12 && data[:extra_chars].nil?
          puts "!------Approximately more  than------!"
        end
        cap_matches+=((greater_half+lesser_half)-((no_limit_matches_a*no_limit_matches_b)-(no_limit_matches_b*base)))*2
      end

     end
      
  end

  if (cap_data[:characters].length <= 2 || data[:cmb_length] >= 13) && data[:extra_chars].nil?
    puts "!!!----Inaccurate information----!!!"
  end

  if !data[:extra_chars].nil?
    all_chars=data[:characters]+data[:extra_chars]
    new_cap_matches=cap_limit_matching_l({:cmb_length=>data[:cmb_length],:characters=>all_chars,:match_limit=>data[:match_limit]})
    return  new_cap_matches-(cap_matches*caps_matched.length)
  else
      return cap_matches*caps_matched.length   
  end
end

#create_file(data) ⇒ Object 



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# File 'lib/file_size.rb', line 505

def create_file(data)
      continue=file_info(data)
    case continue
    when /(y|Y)/
        print "Enter file name:"
          file_name=gets.chomp
          @fh=File.open("#{file_name}.txt","a")
        puts "Creating file"
    when /(n|N)/
      puts "Goodbye"
      exit
    else
      puts "Invalid option"
      exit
    end 
end

#file_info(data) ⇒ Object 



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# File 'lib/file_size.rb', line 441

def file_info(data)
    if data[:write_cmbs].nil?
      poss_combs=get_combinations(data)
      if !data[:match_limit].nil?
        if !data[:cap_limit].nil?
          poss_combs=cap_limit_combs(data)
        else
           poss_combs -= get_above_limit(data)
        end
      elsif !data[:cap_limit].nil?
          poss_combs=cap_limit_combs(data)
      end

      if @rules
        poss_combs -=get_rule_size(data)
      end

      file_size=get_size({:cmb_length=>data[:cmb_length],:combinations=>poss_combs})       
    else
      poss_combs=0
      file_size={:bytes=>0,:kilo=>0,:mega=>0,:giga=>0,:tera=>0,:peta=>0}
      dataB=data.clone
      cmb_count=data[:write_cmbs].length if !data[:cap_limit].nil?
      data[:write_cmbs].each do |n|
        dataB[:cmb_length]=n
        if data[:cap_limit].nil?
        current_combs=get_combinations(dataB)
        if @rules
          current_combs-=get_rule_size(dataB)
        end
        poss_combs +=current_combs
          unless data[:match_limit].nil?
             poss_combs -= get_above_limit(dataB)
             current_combs -= get_above_limit(dataB)
          end
        else
          current_combs=cap_limit_combs(dataB,cmb_count)
          cmb_count -= 1
          poss_combs +=cap_limit_combs(dataB,cmb_count)
        end
        get_size({:cmb_length=>n,:combinations=>current_combs})do |sizes|
          sizes.each do |key,value|
            file_size[key] +=value
          end 
          file_size[:bytes]=0 if file_size[:kilo] >= 1
        end
      end
    end
    if data[:type] == 'all'
        puts "All possible  combinations #{poss_combs}."
    else
      puts "Possible  #{data[:type]} combinations #{poss_combs}."
    end
    size_string="File size:"
    file_size.each do |key,value|
      next if value == 0
      size_string += " #{"%.2f"% value}#{key.capitalize}#{'Bytes' if key != :bytes}"
    end
    puts size_string
    puts "Do you wish to continue ?"
    puts "y|Y n|N"
    return gets.chomp
end

#get_above_limit(data) ⇒ Object 



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# File 'lib/file_size.rb', line 230

def get_above_limit(data)
  if data[:extra_chars].nil?
    base=data[:characters].length
  else
    old_base=data[:characters].length
    previous_matches=0
      previous_mult=0
      i=0
      while i < (data[:cmb_length] -1)
       if i == (data[:match_limit]-1)
          previous_matches=old_base
         old_matches=previous_matches
       elsif i == data[:match_limit]
         previous_matches=previous_matches+(1*(old_base-1))
         previous_mult=1
       else
         temp_mult=previous_matches
         previous_matches=(old_base**(i-1)+previous_mult*(old_base-1))+(previous_matches*(old_base-1))
        previous_mult=temp_mult
       end

       i+=1
      end

      old_matches=old_base*previous_matches if data[:cmb_length] != (data[:match_limit]+1)
    base=data[:characters].length+data[:extra_chars].length
  end

  previous_matches=0
  previous_mult=0
  i=1
  while i < (data[:cmb_length] -1)
    if i == (data[:match_limit]-1)
      previous_matches=base
      return previous_matches if data[:cmb_length] == (data[:match_limit]+i) && data[:extra_chars].nil?
    elsif i == data[:match_limit]
      previous_matches=previous_matches+(1*(base-1))
      previous_mult=1
    else
      temp_mult=previous_matches
      previous_matches=(base**(i-1))+(previous_mult*(base-1))+(previous_matches*(base-1))
      previous_mult=temp_mult

    end
    i+=1
  end
  
  unless data[:extra_chars].nil?
    return base-old_base if data[:cmb_length] == (data[:match_limit]+1)
    return (base*previous_matches)-old_matches
  else
      return base*previous_matches
  end
end

#get_combinations(data) ⇒ Object 



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# File 'lib/file_size.rb', line 304

def get_combinations(data)
  if data[:extra_chars].nil?
    base=data[:characters].length
  else
    old_base=data[:characters].length
    old_combinations=old_base**data[:cmb_length]
    x=0
    post_matches=0
    while x < data[:cmb_length]-1
      if x == 0
        post_matches=old_base
      elsif x == 1
        post_matches=(old_base**x)+(1*(old_base-1))
      else
        post_matches=(old_base**x)+(post_matches*(old_base-1))
      end
      x+=1
    end
    old_matches=old_base*post_matches
    base=data[:characters].length+data[:extra_chars].length
  end
  previous_matches=0
  i=0

  while i < data[:cmb_length]-1
    if i==0
      previous_matches=base
    elsif i== 1
      previous_matches=(base**i)+(1*(base-1))
    else
      previous_matches=(base**i)+(previous_matches*(base-1))
    end
    i+=1
  end
  matches=base*previous_matches

  if data[:type]=='unique'
      possible_combinations=base**data[:cmb_length]
    if data[:uniqueness_type].nil?
       return (possible_combinations-matches)-(old_combinations-old_matches) if !data[:extra_chars].nil?
       return possible_combinations-matches
    else
       single_combs=get_single_combs(data)
       if data[:uniqueness_type]=="single"
        return single_combs
       elsif data[:uniqueness_type]=="repeat"
         return ((possible_combinations-matches)-(old_combinations-old_matches))-single_combs if !data[:extra_chars].nil?
         return (possible_combinations-matches)-single_combs
       end
    end
  elsif data[:type]=='matching'
    return matches-old_matches  if !data[:extra_chars].nil?
    return matches
  else
    if data[:extra_chars]
       remainder = (base ** data[:cmb_length]).-(old_base**data[:cmb_length])
       return remainder
    else
       return base ** data[:cmb_length] 
    end
  end
  return 0
end

#get_rule_size(data) ⇒ Object 



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# File 'lib/file_size.rb', line 411

def get_rule_size(data)
  characters=data[:characters].join()
  digits=characters.scan(/[0-9]/)

  if data[:cap_limit]
    letters=characters.scan(/[a-z]/i)
  else
    letters=characters.scan(/[A-Z]/i)
  end

  combinations=0
  if data[:extra_chars].nil?
    
    if letters.length > 0
      combinations+=get_strictness_one(letters,digits,data[:cmb_length])
    end

    if @strictness >= 2
      combinations +=get_combinations({:cmb_length=>data[:cmb_length],
      :characters=>digits})
    end

    if @strictness == 3
     combinations +=get_combinations({:cmb_length=>data[:cmb_length],
     :characters=>letters,:extra_chars=>data[:extra_chars]})  
    end
  end
  return combinations
end

#get_single_combs(data) ⇒ Object 



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# File 'lib/file_size.rb', line 285

def get_single_combs(data)
  i=0
  single_combinations=0
  extra_singe=0
  extra_chars=data[:characters].length+data[:extra_chars].length if !data[:extra_chars].nil?
  while i < data[:cmb_length]-1
    if i == 0
      single_combinations=(data[:characters].length-1)*data[:characters].length
      extra_singe=extra_chars*(extra_chars-1) if !extra_chars.nil?
    else
      single_combinations=single_combinations*(data[:characters].length-(i+1))
      extra_singe=extra_singe*(extra_chars-(i+1)) if !extra_chars.nil?
    end
    i+=1
  end
  return extra_singe - single_combinations if !data[:extra_chars].nil?
  return single_combinations
end

#get_size(data) {|return_sizes| ... } ⇒ Object

Yields:

  • (return_sizes) 


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# File 'lib/file_size.rb', line 3

def get_size(data)
  bytes=data[:combinations]*(data[:cmb_length]+1)
  kilo_bytes=bytes/1000.0
  mega_bytes=kilo_bytes/1000.0
  giga_bytes=mega_bytes/1000.0
  tera_bytes=giga_bytes/1000.0
  peta_bytes=tera_bytes/1000.0
  all_sizes= {:bytes=>bytes,:kilo=>kilo_bytes,:mega=>mega_bytes,:giga=>giga_bytes,:tera=>tera_bytes,:peta=>peta_bytes}
  return_sizes= {}
  all_sizes.each do |key,value|      
    if kilo_bytes < 1
      return_sizes[key]=value
      break
    end
    return_sizes[key]=value if value > 0.01 && key != :bytes
  end
  yield(return_sizes) if block_given?
  return return_sizes
end

#get_strictness_one(letters, digits, cmb_length) ⇒ Object 



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# File 'lib/file_size.rb', line 368

def get_strictness_one(letters,digits,cmb_length)
  combinations=0
  if cmb_length % 2 != 0
           ceiling=(cmb_length/2.0).ceil
           floor=(cmb_length/2.0).floor
  end

  if cmb_length == 6
    combinations+=get_combinations({:characters=>digits,:cmb_length=>(cmb_length/2)})*2
    combinations+=get_combinations({:characters=>letters,:cmb_length=>(cmb_length/2)})*2

  elsif cmb_length == 7
      combinations+=get_combinations({:characters=>digits,:cmb_length=>floor})*2
      combinations+=get_combinations({:characters=>letters,:cmb_length=>ceiling})*2
  elsif cmb_length == 8
    combinations+=get_combinations({:characters=>digits,:cmb_length=>(cmb_length/2)})*2
    combinations+=get_combinations({:characters=>letters,:cmb_length=>(cmb_length/2)})*2
  elsif cmb_length == 9
      combinations+=get_combinations({:characters=>digits,:cmb_length=>floor})*2
      combinations+=get_combinations({:characters=>letters,:cmb_length=>ceiling})*2
  elsif cmb_length == 10
    combinations+=get_combinations({:characters=>digits,:cmb_length=>(cmb_length/2)})*2
    combinations+=get_combinations({:characters=>letters,:cmb_length=>(cmb_length/2)})*2
  elsif cmb_length == 11
      combinations+=get_combinations({:characters=>digits,:cmb_length=>floor})*2
      combinations+=get_combinations({:characters=>letters,:cmb_length=>ceiling})*2
  elsif cmb_length == 12
    combinations+=get_combinations({:characters=>digits,:cmb_length=>(cmb_length/2)})*2
    combinations+=get_combinations({:characters=>letters,:cmb_length=>(cmb_length/2)})*2
  elsif cmb_length == 13
      combinations+=get_combinations({:characters=>digits,:cmb_length=>floor})*2
      combinations+=get_combinations({:characters=>letters,:cmb_length=>ceiling})*2
  elsif cmb_length == 14
    combinations+=get_combinations({:characters=>digits,:cmb_length=>(cmb_length/2)})*2
    combinations+=get_combinations({:characters=>letters,:cmb_length=>(cmb_length/2)})*2
  elsif cmb_length == 15
      combinations+=get_combinations({:characters=>digits,:cmb_length=>floor})*2
      combinations+=get_combinations({:characters=>letters,:cmb_length=>ceiling})*2
  end
  
  return combinations
end

#unique_cap_limit(data) ⇒ Object 



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# File 'lib/file_size.rb', line 162

def unique_cap_limit(data)
  cap_data={}
  total_chars=data[:characters].join()
  caps_matched= total_chars.scan(/[A-Z]/)
  cap_data[:characters]=[]
  data[:characters].each do |char|
    next if caps_matched.include?(char)
    cap_data[:characters].push(char)
  end
  base=cap_data[:characters].length
  unique_cap_limit=0
  if data[:uniqueness_type] == 'single'
    if data[:cmb_length] == 3
      unique_cap_limit=(((base**2)-(base))*3)
    else
      previous_single=get_single_combs(:characters=>cap_data[:characters],:cmb_length=>data[:cmb_length]-1,:type=>"unique")
      unique_cap_limit=previous_single*data[:cmb_length]
      end
  else
    case data[:cmb_length]
      when 3
        if data[:uniqueness_type].nil?
          unique_cap_limit=((base**2)*3)-(base*2)
        else
          unique_cap_limit=((base**2)*3)-(base*2)-(((base**2)-(base))*3)
        end
      when 4
        previous_unique=get_combinations(:characters=>cap_data[:characters],:cmb_length=>data[:cmb_length]-1,:type=>"unique")
         if data[:uniqueness_type].nil?
          unique_cap_limit=(previous_unique*2)+((((base**2)-base)*base)*2)
         else
          previous_single=get_single_combs(:characters=>cap_data[:characters],:cmb_length=>data[:cmb_length]-1,:type=>"unique")
          unique_cap_limit=(previous_unique*2)+((((base**2)-base)*base)*2)-(previous_single*data[:cmb_length])
         end         
      else
        previous_unique_a=get_combinations(:characters=>cap_data[:characters],:cmb_length=>data[:cmb_length]-1,:type=>"unique")
        previous_unique_b=get_combinations(:characters=>cap_data[:characters],:cmb_length=>data[:cmb_length]-2,:type=>"unique")
        if data[:uniqueness_type].nil?
          unique_cap_limit=(previous_unique_a*2)+((previous_unique_b*base)*(data[:cmb_length]-2))
        else
          previous_single=get_single_combs(:characters=>cap_data[:characters],:cmb_length=>data[:cmb_length]-1,:type=>"unique")
          unique_cap_limit=(previous_unique_a*2)+((previous_unique_b*base)*(data[:cmb_length]-2))-(previous_single*data[:cmb_length])
        end
    end
  end
    
  if !data[:extra_chars].nil?
    all_chars=data[:characters]+data[:extra_chars]
    new_unique_cap_limit=unique_cap_limit({:cmb_length=>data[:cmb_length],:characters=>all_chars,:uniqueness_type=>data[:uniqueness_type]})
    return  new_unique_cap_limit-(unique_cap_limit*caps_matched.length)
  else
    return unique_cap_limit*caps_matched.length
  end
end